Debugging method and device for operating point voltage of parallel MZI electro-opticalmodulator
US10680709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Dec 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/564
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A debugging method and device for an operating point voltage of a parallel MZI electro-optical modulator. The parallel MZI electro-optical modulator comprises a Parent MZI (2) formed by a parallel connection of a Child MZI (3) in an I path and a Child MZI (4) in a Q path. The debugging method comprises: fixing a bias voltage of one Child MZI of the Child MZI (3) in the I path and the Child MZI (4) in the Q path; gradually adjusting a bias voltage of the other Child MZI, testing a parent extinction ratio PER of the Parent MZI (2) when different bias voltages are applied, and finding a corresponding bias voltage as an operating point voltage of the other Child MZI when the PER of the Parent MZI (2) reaches a minimum value, and then finding a corresponding bias voltage as an operating point voltage of the one Child MZI when the PER of the Parent MZI (2) reaches a minimum value; setting the bias voltages of two Child MZIs as operating point voltages corresponding to the two Child MZIs respectively, adjusting a phase modulation voltage of the Parent MZI (2) until the parallel MZI electro-optical modulator reaches an optimum output effect, and determining the phase modulation voltage of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.